Question

Choose the FALSE statement:

A) Your tailbone, little toe, and wisdom teeth are all examples of vestigial structures; despite their lack of importance today, these structures once served valuable functions in some of our evolutionary ancestors.

B) Given the length of time that a given species survives, we can conclude that only a small fraction of the total number of species that have arisen through evolution are represented among living organisms today.

C) The phylogenetic tree shown serves as an accurate representation of the pattern of evolution believed to have taken place during the Cambrian, as animal body plans evolved from simple to complex.

Choose the FALSE statement:

A) Darwin proposed that mate choice (sexual selection) was a form of natural selection, where those individuals with the best traits had the best chance of reproducing.

B) Among most species that engage in sexual selection, the males of the species are unremarkable in appearance and it is the females that display eye-catching features.

C) The interaction occurring in the image at right is an example of intrasexual selection.

Choose the FALSE statement:

A) The Kingdom Monera is the only kingdom containing organisms with prokaryotic structure.

B) Recent discoveries have led to a realization that prokaryotes are more diverse than previously imagined; accordingly, K. Monera is now subdivided into two Domains.

C) When comparing the two distinct types of prokaryotes, the Eubacteria and the Archaea, one can say that despite their differences, they are still much more alike than say a human is to a plant or a fungus.

Answer 1

Ans1)B) Given the length of time that a given species survives, we can conclude that only a small fraction of the total number of species that have arisen through evolution are represented among living organisms today.

explaination: The correct is

Given the length of time that a given species survives, we can conclude that large fraction of the total number of species that have arisen through evolution are represented among living organisms today.

Ans2)B) Among most species that engage in sexual selection, the males of the species are unremarkable in appearance and it is the females that display eye-catching features.

Explaination:correct: Among most species that engage in sexual selection, the females of the species are unremarkable in appearance and it is the males that display eye-catching features.

Ans3)C) When comparing the two distinct types of prokaryotes, the Eubacteria and the Archaea, one can say that despite their differences, they are still much more alike than say a human is to a plant or a fungus.

Explaination: on comparing the two distinct types of prokaryotes, the Eubacteria and the Archaea, one can say that archaea are more alike to a eukaryotes such as human or a plant or a fungus than a eubacteria. As both Archaea and eukaryotes have 3 RNA polymerase, similar cell wall conposition, and archaea have DNA binding basic protein just like histones in eukaryotes while eubacteria have single RNA polymerase, different Cell wall compositionand lack histones.